/*-
 * #%L
 * Elastic APM Java agent
 * %%
 * Copyright (C) 2018 - 2019 Elastic and contributors
 * %%
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * #L%
 */
package co.elastic.apm.opentracing;

import io.opentracing.propagation.TextMap;

import javax.annotation.Nullable;
import java.util.Map;

class ExternalProcessSpanContext implements ApmSpanContext {

    // co.elastic.apm.agent.impl.transaction.TraceContext - only for the purpose of holding the parsed IDs
    @Nullable
    private Object childTraceContext;

    private final TextMap textMap;

    private ExternalProcessSpanContext(TextMap textMap) {
        this.textMap = textMap;
    }

    static ExternalProcessSpanContext of(TextMap textMap) {
        return new ExternalProcessSpanContext(textMap);
    }

    @Override
    public String toTraceId() {
        // co.elastic.apm.agent.opentracing.impl.ExternalSpanContextInstrumentation$ToTraceIdInstrumentation
        return "";
    }

    @Override
    public String toSpanId() {
        // co.elastic.apm.agent.opentracing.impl.ExternalSpanContextInstrumentation$ToSpanIdInstrumentation
        return "";
    }

    @Override
    public Iterable<Map.Entry<String, String>> baggageItems() {
        return textMap;
    }

    @Nullable
    @Override
    public Object getTraceContext() {
        return null;
    }
}
